摘要本文的膛压模拟器是以某种模拟发射装置为基础，对其做小型化和变容设计， 能够模拟火炮发射，实现火炮发射时的最大压力和炮口压力模拟，模拟器体积小， 结构简单紧凑，更加方便试验。69452

本文介绍了膛压模拟器的结构分析和工作原理；对模拟发射过程做出了基本 假设，构建了气体状态方程和运动方程，建立了发射过程的数学模型，并用数学 编程软件进行编程计算，得到了描述发射过程中压力分别随时间和行程的变化情 况的函数图像和一些重要参数的计算结果；对膛压模拟器进行了变容分析，使燃 烧室能容纳不同体积的受试零部件；确定了膛压模拟器各零件的尺寸并绘图；在 最后对膛压模拟器的设计作了总结。

毕业论文关键词 膛压模拟器 小型化 变容 火炮发射 数值计算

Title Design of Small Chamber Pressure Simulator with Variable Volume of the Combustion Chamber

Abstract The bore pressure simulator is is based on one simulation launcher device, design of miniaturization and transfiguration， can simulate the artillery launch, achieve the maximum pressure and the muzzle pressure of artillery launch. The simulator has small volume, simple and compact structure, let our test be more convenient.

This paper introduces the design of the structural analysis and working principle of the bore pressure simulator, make a basic assumption to simulate launch, build the gas state equation and the equation of motion, established the mathematical model of the firing process, and use mathematical programming software to program and calculation, and then get the function of image describing pressure with the change of time and stroke in the process of launch and calculation results of some important parameters. The transfiguration analysis was carried out on the bore pressure simulator, to let the combustion chamber can hold different volume of test part. Determine the size of the bore pressure simulator of each parts and drawing. In the end, summarize the design of the bore pressure simulator.

Keywords bore pressure simulator miniaturization transfiguration artillery launch     numerical calculation

目次

1 绪论 1

1.1 研究背景 1

1.2 研究现状 1

1.3 本文的主要研究内容 3

2 膛压模拟器的总体方案 5

2.1 总体结构 5

2.2 工作原理 6

3 模拟发射过程的数学模型 7

3.1 基本假设 7

3.2 模拟发射过程各时期的划分 7

3.3 模拟发射过程的动力学模型 7

3.3.1 调压体的阻力方程 7

3.3.2 火药气体状态方程和燃烧模型 8

3.3.3 火药气体从中心孔流出的相对流量计算式 9

3.3.4 调压体运动方程 9

3.3.5 膛内气体能量守恒方程